show me how do find volume i know it is base x height but then what? example 20 cm wide 17cm high and how do i bring it to nearest cubic unit. I am in 6th grade. thank you
You seem to be missing one measurement. For volume, you need the width, length, and height.
http://library.thinkquest.org/20991/geo/solids.html
length x width x height
To find the volume of a rectangular prism, you are correct that you need to multiply the base (length x width) by the height. Here's how you can calculate the volume of a rectangular prism and express it in the nearest cubic unit using your example dimensions:
1. Identify the base dimensions: In your example, the base of the prism is 20 cm wide.
2. Determine the height: In your example, the height of the prism is 17 cm.
3. Multiply the base by the height: Multiply the base dimensions (20 cm x width) by the height (17 cm).
Volume = Base x Height
= 20 cm x 17 cm
= 340 cm²
4. Express the volume in cubic units: Since volume is measured in cubic units, you need to consider all three dimensions (length, width, and height). In this case, you already have the product of the base and height, which is 340 cm². To convert it to cubic units, you need to express it in terms of length, width, and height.
5. Round to the nearest cubic unit: To round to the nearest cubic unit, you must consider the original units and round to the nearest whole number. Since the base and height are measured in centimeters (cm), the volume will be expressed in cubic centimeters (cm³).
Therefore, the volume of the rectangular prism is 340 cm³.
It's important to note that when you calculate the volume of any shape, the result will always have cubic units since you are measuring volume. The rounding to the nearest whole number is simply to express the answer in the most appropriate unit for the context.